16. A psychologist wishes to know to what degree verbal...

16. A psychologist wishes to know to what degree verbal skills and mathematical skills are related. She obtains the verbal and quantitative scores on the Graduate Record Examination for a sample of 13 students. The scores are shown in the table. Student Verbal Quantitative 1 440 390 2 401 501 3 388 443 4 430 496 5 359 512 6 671 692 7 669 480 8 386 491 9 592 665 10 583 622 11 543 407 12 586 611 13 420 505 Labor savings (you may not need all these): $\sum X$ 6,468 6,815 $\sum X^2$ 3,370,522 3,680,959 $\sum (X - \bar{X})^2$ 152,443.3 108,326.3

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A psychologist wishes to know to what degree verbal skills and mathematical skills are related. She obtains the verbal and quantitative scores on the Graduate Record Examination for a sample of 13 students.The scores are shown in the table (a) prepare a scatterplot and eyeball-estimate the correlation coefficient . (b) compute the Pearson correlation coefficient 17) is fhe correlation you obtained significant? Do the 5 steps of hypothesis testing to find out able[[Student,Verbal,Quantitative],[1,440,390],[2,401,501],[3,388,443],[4,430,496],[5,359,512],[6,671,692],[7,669,480],[8,386,491],[9,592,665],[10,583,622],[11,543,407],[12,586,611],[13,420,505],[sum 2 Labor savings (you may not need all these):,,],[sum x^(2),6,468,6,815],[sum (x-ar{x} )^(2),3,370,522,3,680,959 16.A psychologist wishes to know to what degree ver- bal skills and mathematical skills are related.She obtains the verbal and quantitative scores on the Graduate Record Examination for a sample of 13 students.The scores are shown in the table Student Verbal Quantitative 1 440 390 2 401 501 3 388 443 4 430 496 5 359 512 6 671 692 7 669 480 8 386 491 9 592 665 10 583 622 11 543 407 12 586 611 13 420 505 Labor savings (you may not need all these): 6,468 6,815 Ex2 3,370,522 3,680,959 X-X 152,443.3 108,326.3 19. V e th

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